diff --git a/opendbc/car/mazda/carstate.py b/opendbc/car/mazda/carstate.py
index 34919e04dd6..d64686f2bd7 100644
--- a/opendbc/car/mazda/carstate.py
+++ b/opendbc/car/mazda/carstate.py
@@ -87,7 +87,7 @@ def update(self, can_parsers) -> structs.CarState:
     ret.cruiseState.speed = cp.vl["CRZ_EVENTS"]["CRZ_SPEED"] * CV.KPH_TO_MS
 
     # stock lkas should be on
-    # TODO: is this needed?
+    # LKAS requires detected lane lines; block engagement if none are present
     ret.invalidLkasSetting = cp_cam.vl["CAM_LANEINFO"]["LANE_LINES"] == 0
 
     if ret.cruiseState.enabled: